• Project

I-5 - NB Seneca to SR 520 - Mobility Improvements

Project overview

To improve mobility on I-5 through Seattle, we will move barrier on a 1,500-foot section to create three through lanes near Seneca Street, add ramp meters for the Dearborn/I-90 and Cherry Street on-ramps and extend the Active Traffic and Demand Management system north to SR 520.

Spring 2021 - Spring 2023
Project status
$27.5 million

What to expect

Plan for weeknight overnight lane closures from 9 p.m. to 5 a.m. that will affect access to and from downtown Seattle. All traffic may shift to the collector/distributor and ramps to or from northbound I-5 may be closed. Specific information is available on our real-time traffic map.

Work between Yesler Way and SR 520 will add a short section of a third lane between Seneca Street and the Washington State Convention Center, ramp meters at the Dearborn/I-90 and Cherry Street on-ramps and extend the Active Traffic and Demand Management system.